Influence of de‐icing salt chemistry on the corrosion behavior of AA6016

Abstract

De‐icing salts are commonly used on European roads during winter and are usually based on chlorides of sodium, magnesium, or calcium. The salt selection depends on the local climate and legislation. Therefore, the chemical composition of the de‐icing mixture can be very different within Europe. This represents an important challenge for the automotive industry as the corrosion behavior of automotive parts is intricately linked to the chemistry of the road environment. Furthermore, the use of aluminium alloys in the automotive industry increases due to a constant search for weight reduction. Till now, most of the corrosion studies on aluminium alloys in chloride based solutions have only been focused on sodium chloride. In this study, the effect of different chloride based salts on the corrosion of AA6016 was investigated. For that purpose, potentiodynamic polarization measurements were combined with surface analysis by SEM‐EDS and depth profiling using GDOES. Salts based on sodium and calcium showed similar effects on the corrosion behavior of AA6016 while the magnesium based salt reduced the corrosion rate. Mixture of sodium and magnesium based salts increased the corrosive attack.

Hydrogen Embrittlement Evaluation and Prediction in Press‐Hardened Steels

“…A typical example of the atmospheric corrosion behavior of automotive parts is the corrosion caused by deicing salts. [55][56][57] It has been demonstrated by both field and accelerated tests that such corrosion causes extensive deterioration of components. [58,59] During the metal's corrosion and hydrolysis, the atmospheric pH value and corrosion potential continuously decrease, promoting the external hydrogen entry.…”

Multifunctional Anti-Icing Gel Surface with Enhanced Durability

“…Ice accumulation on surfaces can lead to severe safety accidents and substantial economic losses on vessels, offshore platforms, aircraft, wind turbines, and roads. − In polar regions or extreme environments with ultralow temperatures (≤−30 °C), the icing issue is very severe. Various traditional deicing methods have been proposed and developed for practical anti-icing, including chemical deicing, mechanical deicing, and heating deicing. − Nevertheless, environmental pollution and high energy consumption continue to hinder their development. − …”

Corrosion on high-frequency welded Al–1.1Mn–0.5Cu–0.1Ti micro-fin tubes externally cladded with Al–1.2Zn used for high-performance heat transfer applications

“…Aluminium alloys used in the automotive industry as well as the HVA&C industry are designed to perform under both acidic and alkaline corrosive atmospheres generally arising from the environmental Cl − contaminations as well high-pH alkaline detergents [17,18]. However, the kinetics of aluminium dissolution vary considerably in acidic or alkaline aqueous media and if Cl − ions are present.…”